Which of the following is NOT true about SWR?
1
\(VSWR = \frac{V_{max}}{V_{min}}\)
2
\(VSWR = \frac{V_{fwd} + V_{ref}}{V_{fwd} - V_{ref}}\)
3
ISWR meter can measure current SWR and VSWR can measure voltage SWR
4
Standing waves are also known as stationary waves in physics.